package main

import (
	"fmt"
	"os"
)

func main2() {
	s := []int{1, 2, 3, 4}
	for i, v := range s {
		fmt.Println(i, v)
	}

	if f, err := os.Open("o:/t.txt"); err != nil {
		fmt.Println(f, err)
	}

}
